Solve by hand /No Dynacam

Design a single dwell cam to move a follower, dwell for 120 deg, rise from 0 to 3 inches in 100 deg and fall 3 inches in 140 deg. the total cycle must take 2 sec. choose suitable function for rise and fall to minimize acceleration. Plot SVAJ diagram

Another less efficient way to estimate pi is the Gregory-Leibniz series: pi = 4/1 -4/3 + 4/5 -4/7 + 4/9... . Use a while loop to approximate pi using this technique (5 points). Continue the calculations until the absolute value of the difference between the value of pi stored in MATLAB and the approximation is less than 0.001. Report the final approximation and the number of iterations required (5 points). Hint: to alternate the sign on each term use (-1) raised to a power.

Another less efficient way to estimate pi is the Gregory-Leibniz series: pi = 4/1 -4/3 + 4/5 -4/7 + 4/9... . Use a while loop to approximate pi using this technique (5 points). Continue the calculations until the absolute value of the difference between the value of pi stored in MATLAB and the approximation is less than 0.001. Report the final approximation and the number of iterations required (5 points). Hint: to alternate the sign on each term use (-1) raised to a power.

Open ended question

Design a power plant for a city. Design and list steady-state flow devices required to convert energy from natural gas into electricity. Set up conservation of mass and the first law of thermodynamics for all steady-state flow devices in a simplified form.

In your report include:

List of steady-state flow devices and justifications.

Assumptions, system schematic, simplified mass and energy balances.

Please be detailed. Thank you

Name two sources of renewable energy that you know and one way of harvesting and storing energy from one of them. Make a sketch of the process and label the components that will be involved .

Name two sources of renewable energy that you know and one way of harvesting and storing energy from one of them. Make a sketch of the process and label the components that will be involved .

As part of a heat treatment process, cylindrical, 304 stainless steel rods of 100-mm diameter are cooled from an initial temperature of 500ºC by suspending them in an oil bath at 25ºC. If a convection coefficient of 500 W/m²·K is maintained by circulation of the oil, how long does it take for the centerline of a rod to reach a temperature of 52ºC, at which point it is withdrawn from the bath? If 9 rods of length 1 m are processed per hour, what is the nominal rate at which energy must be extracted from the bath (the cooling load)?

Estimate the percentage of specular component of total solar radiation onto flat surfaces. Consider the following flat surfaces: (a) surface roughness of 0.1 µm; (b) surface roughness of 1.0 µm; and (c) surface roughness of 10 µm

Elementary Partial Differential Equations

Heat flow in a circular cylinder.

Consider a strand of heat-conducting material, homoge- neous with heat capacity c, thermal conductivity κ, and surface heat transfer coefficient μ. The strand is a right circular cylinder of radius R and height H. Unless otherwise indicated below, assume that no heat is being generated or destroyed inside the strand. For each of the following scenarios, set up the IBVP for the temperature distribution u in the strand. In each case, reduce the spatial dimension of the problem as far as possible, identify the independent variables (time t and a subset of the cylindrical coordinates r, θ, z), write all equations explicitly in terms of those variables, and indicate where exactly the equations are to hold. Also, whenever possible, set up the corresponding steady-state problem. If it reduces to an ODE, solve the steady-state problem and graph the solution.

(a) While the lateral surface and the top of the cylinder are perfectly insulated, the bottom is maintained at a constant temperature Tbot. The initial temperature distribution is a function f(z).(b) Same as in (a), except that the temperature at the bottom changes, at a constant rate and over a period of τ units of time, from an initial constant temperature T0 to a final constant temperature T∞, and is maintained at that final value ever after.
(c) Same as in (a), except that heat is exchanged across the top end, according to Newton’s law of cooling, with an external medium at constant temperature Text.
(d) Same as in (c), except that Newton’s law applies also on the lateral surface of the cylinder. (e) Same as in (d), except that top and bottom are perfectly insulated and the initial temperature
distribution is a function f(r).

(f) Same as in (e), except that the initial temperature distribution is a function f(r,θ) and that heat is generated inside the cylinder (for example, via Joule heating) at a constant rate G (heat units per unit time and unit volume).
(g) Same as in (f), except that heat is added also through the bottom of the cylinder, at a constant rate Q (heat units per unit time and unit area).

Explain different types of welding?

A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at 200oC, 1 bar. During an interval of 20 minutes, the paddle wheel transfers energy to the air at a rate of 1 kW. During this time interval, the air also receives energy by heat transfer at a rate of 0.5 kW. These are the only energy transfers. Assume the ideal gas model for the air, and no overall changes in kinetic or potential energy. Do not assume specific heats are constant. Determine the change in specific internal energy for the air, in kJ/kg, and the final temperature of the air, in oC. The answer to the change in internal energy is 818.2 kJ/kg. find the final temperature of the air, in ^oC.

Steam at 50 Bar and 500oC is expanded isentropically through a single stage turbine to a condenser operating at 1 bar.

Assuming the steam at turbine exit is Dry Saturated Steam and the turbine is required to produce a power output of 5.33MW. Calculate the required steam mass flow rate in kg/s to 2 decimal places.

1.      True or false: heating air de-humidifies it.

2.      What capacity (power) electric heater would be needed to raise the temperature of 300 cubic feet of concrete from 65° F to 150° F in 120 minutes? As this is electrical power, state response in watts or kilowatts.

3.      What would be the total cost of #2 fuel oil to operate a boiler expected to perform the task in question 2 if the boiler were operating at full fire with an efficiency of 80% and the cost of #2 fuel oil is $2.50/gallon?

4.      How does a chilled beam save energy in the operation of an HVAC system?

5.      What are the four major components of a vapor-compression refrigeration machine?

6.      What is the purpose of a VFD in an HVAC system?

1. How much oil (in tonnes) would be required in an oil-fired power plant to generate the equivalent amount of electrical energy as the hydropower generates in a year? The energy content of oil is 11,630 kWh/tonne and chemical to electrical energy conversion efficiency is about 30%.

2. How much (in tonnes) would be the CO2 emissions if the Oil power plant was used? Assume the oil power plant produces 0.27 kg CO2 per kWh